1U dual channel microphone preamp followed by a dual channel FET compressor with stereo link and mix blend capabilities

Single Slot 500-Series Mic Preamp with an innovative Zero-Negative-Feedback design, Class-A circuit with Lundahl LL578XL input transformer

GML Microphone Preamplifiers are world renowned for their life-like realism, high resolving power, and reference-standard transparency.
Why? Their all-discrete, bipolar transistor circuit topologies are completely transformerless with no FET’s, IC’s, or electrolytic capacitors in the signal path.
Even the outputs are direct-coupled; time-proven active servos remove DC without adding any artificial colour. 15dB to 70dB of Gain is front panel selectable in accurate 5dB steps.
A +24dBv CLIP indicator warns of any impending overloads and switchable phantom powering is built in.
The 8304 two-channel mic pre (as well as the 8302 two-channel version) fits compactly in only 1U of rack space, and requires the external GML 8355 Power Supply.

High fidelity single channel mic preamp with Ribbon Mic mode and Grace Design’s pedigree offering musical, natural and detailed performance.

500 series module microphone preamplifier.

The model 801 is an eight channel microphone preamplifier designed to capture all the subtlety and detail that exists in music.